Primitive/Operation Requests about descartes.jl HOT 3 OPEN

This code ideally would be entirely legitimate. The problem is there is no Circle implemented yet, and it is pulling in the type from GeometryTypes. Re: #26

I think I stopped at figuring out how I wanted 2D shapes to behave. The easiest way is to treat them as 3D shapes, so let's try that first.

from descartes.jl.

I pushed the finished up the 2D API for Circles and Squares and pushed it to master. I stuck with similar constraints to what OpenSCAD imposes for now, but later I think these could be relaxed and you should be able to translate a 2D geometry in 3D space.

This is a rough pass and there may be bugs in translating the resultant extrude, so I will keep this issue open.

There is an example here, and output: https://github.com/sjkelly/Descartes.jl/blob/master/examples/2d.jl

from descartes.jl.

formulations for rounded boxes: https://iquilezles.org/www/articles/distfunctions/distfunctions.htm

I'd actually prefer atomic issues for each subject so there are clear action items.

I agree that the current naming is ambiguous for square. it is supposed to be similar to OpenSCAD. I may move OpenSCADisms into a submodule an go with generic names such as Cuboid, which actually isn't truely correct as implemented AFAIK.

BTW: I have a policy of not looking at libfive source links since it is GPL. Descartes is MIT, so I do not want to risk any issues.

from descartes.jl.